package com.atguigu.gulimall.seckill.scheduled;

import com.atguigu.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * @Author: Zjn ; Bring it on !!!
 * @Date: 2021/12/5 0005 20:00
 * Note:
 */
@Slf4j
@Service
public class SeckillSkuScheduled {
    @Autowired
    SeckillService seckillService;

    @Autowired
    RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    //TODO 幂等性处理，上架的商品无需再上架
    @Scheduled(cron = "0 * * * * ?")
    public void uploadSeckillSkuLatest3Days(){
        //1.重复上架无需处理
        log.info("上架秒杀的商品信息.....");
        //防止多台机器同时上架同一件商品，需要上分布式锁
        //锁的业务执行完成，状态已经更新完成。释放锁以后，其他人就会获取到最新的状态
        RLock lock = redissonClient.getLock(upload_lock);
//        lock.lock(10, TimeUnit.SECONDS);
        lock.lock();
        try {
            seckillService.uploadSeckillSkuLatest3Days();
        } finally {
            lock.unlock();
        }
    }
}
